Work shirt



FIG. 1 is a front elevational view of a work shirt according to my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the undisclosed left side being a mirror image;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is an elevational view showing the work shirt turned inside-out and folded over. 

CLAIM The ornamental design for a work shirt, as shown. 